The not-so-secret secret is Sephora's free birthday gift changes every year. After you sign up for free, you'll get an email in January announcing the new yearly birthday gift. Sometimes it contains mascara, maybe there's a highlighter, and every now and again you'll get a “top-rated” luminizer for … luminizing. But not matter what it is, I'll update this post every year as the birthday offer changes!
Remember, you can pick up your Sephora birthday present on any day within your birthday month.
Don't forget we have one of the oldest and most updated lists of birthday freebies available on the Internet. Chances are any list you find on other site's is just an older copy of ours 🙂